Pipe-coupling.



J. M. ST JOHN.

PIPE COUPLING.

APPLICATION FILED JUNE 9, 1906.

Patented Jan. 12, 1909.

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13mm ease:

Wo en so A u 4.; .A'L $1413.) i .i.. .432; .414 .LLA k) JOSEPE n. sr.JOHN, or PAD/7.102111, 1EN"iUCKY,'ASS

EVANSVILLE, INDI PEPE 43 (TU:

No. see-coo S ecification of Letters Patent.

BEETS.

Patented Jon. is, 1909.

Agaplioation filed June 9, 1%". Serial To all whom it may concern:

Be it known that l, JosseH' citizen sducsh, ate of M. Sr. JOHN in thecounty of McCracken zincl t Kentucu 9 have invented certain exv asuseful improvements in Pipe Couplings, of which the following is aspecification.

My invention relates to couplings for pipe lines and especially tocouplings used for fire hose, air-brake pipe lines and. other caseswhere a quick coupling is to he made, and has for its object theprovision of a coupling that is'essil v and quickly made and. broken andvery effective in operation.

My inipr ved coupling will he described in detail hereinafle fendillustrated in the accompanying drawings in vvhicli- Figure l is a sidefew in elevation of my improved coupling. a longitudinal sectional View,o s

metal pipes, in the latter case the threads (L on one end thereof areomitted. 'The end of pipe A farthest. from the ihseads C is formedlarger in diameterthan the balance of the pipe, the result being 2-.socket l)- therein larger in diameter than the bore of the pipe and anannular shoulder E having its sun face beveled inwardly. The of'pipe l3farthest from. the threads C is formed to snugly the socket l)- in theend of ips A shown at F and is provided with-a circumferential projotion or shoulder G to engage theend of pipe A.

ll represents rin slidahl mounted on pipe section B having thereon, 50

tween each pair of which is pivotelly secured a clamp lever lmvp guidesurfaces j and beveled clamping surface. the beveled surface 3 $l1011der Th the clamping jaws J'to guides it. hovne" segmental clamping ews JWllll l3EV8l9C s 9" to engage ends of plump levers l are extended beyondof the United States, residing at v. ln Figs. 1 and 2 represents a hamdle for rotating ring N but, as shown in Fig. 3. this may be dispensedw1th, if desired,

ing their-inner surfaces beveled as shoiv'n Iii.

L represents springs to hold the lovers 1 in s clamping position While Mrepresents holds extending om said levers for opening them in hree d thecoupling.

N and 1*? represent rings having corresponding cam faces 7% and 12'respectively. in assembling the coupling the ring N is secured to ringwhile ring N is mounted forrotetion between send ring N and shoulandsocket or SQCKQJS Q substituted to reltey (not shown) for turning it.

i. he understood that in maklngor clamping: jaws J servop :1 them topermit the passage of While the springs L close sei so as to engage theshoulder E. Aft sssemhlel as stated, by rotating the ring D! the ring HWlll he moved loac from ring D so as to draw the beveled sur- .c 1: Tlaces Oi ews 1; into engagement with the beveled surface e of shoulder Eand the coupling will he secnrelymade. in break-' mg the-couplingthe-ring N 1s first rotated in a reverse direction so as to relieve'thetension on jaws J. Then by pressing on fin er holds M the jaws J fromengagement with shoulder E and the pipes A and B may separated.

.i. thus described my invention What I claim is pipe coupling two matingpipe sections one of said sections having a beveled.

shoulder projecting therefrom, a shoulder on other ection, a ringsliclaoly mounted on the mentioned section having perforated ears,levers fulcrumed on said ears, segmental clamping members extendi 1yfrom said levers end having nieces to engage the beveled foiessidsprings secured to the and engaging the levers,

ring and s. cam-faced ring revoiubly mounted on pipe section andengaging the ring end shoulder aforesaid, said to lock. the clamp the'conpli g the end F oil pipeare thrown outwardly cam-faced 1mg secured.to' said slidalole in jaws in engagement with said shoulder, sustantially as shown and described.

2. A pipe coupling comprising two mating pipe sections, one of saidsections having a socket, therein, the other section formed to fit saidsocket snugly, a beveled shoulder on the first mentioned section, ashoulder on the other section, a ring slidably mounted on the lastmentioned section having perforated ears, levers fulcrumed on said ears,segmental clam ing membersextending lat eraily from said levers andhaving beveled surfaces to engage the beveled shoulder aforesaid,springs secured to the ears on the ring and engaging the levers, theends of the levers and of the clamping members beveled inwardly to actas guides for the ends of the levers, a cam-faced ring secured to saidslid-able ring, and a cam-faced ring revolubly mounted on the pipesection and engaging the cam-faced ring and shoulder aforesaid, saidcam-faced rings operating to lock the clamping jaws in engagement I withsaid shoulder, substantially as shown and described.

In testimonywhereof I hereto afiix my signature in the presence of twowitnesses.

JOSEPH M. ST. JOHN.

